Connecting-rod for piston engines or machines.



A. ISLIKER.

CONNECTING ROD FOR PISTON ENGINES 0R MACHINES.

APPLICATION FILED AUGJ. I9I8.

Patented Feb. 18, 1919.

2 SHEETS-SHEET I- A. ISLIKER.

comwecnms ROD FOR mum ENGINES on MACHINES.

v APPUCATIQN FILED AUG. 7 1918' 1,295,091 Patented Feb. 18, 1919.

2 SHEETS-SHEET 2.

xi xg x x1 x6 ALBERT ISIIIKER OF GENEVA, SWITZERLAND, ASSIGNOR OFONE-HALF TO THE FIRM OF MOTOSACOGHE SOCIETE AN ONYME, OF GENEVA,SWITZERLAND.

CONNECTING-ROD FOR PISTON ENGINES 0R MACHINES.

To all whom it may concern:

Be it known that I, ALBERT ISLIKER, engineer, a citizen of Switzerland,residing at Geneva, Canton of Geneva, in the Confederation ofSwitzerland, have invented certain new and useful Improvements in andRelating to Connecting-Rods for Piston Engines or Machines, of which thefollowing is a specification.

The present invention relates to the lubrication of connecting-rod headsand crank pins of piston engines or other machines.

In carrying out my invention the bushing in the head of the rod isprovided on both sides of the middle transverse plane with collectingdevices for the lubricant after having served its purpose, said devicesbeing in communication with other devices wherefrom the lubricant isdischarged in a predetermined direction and in a predetermined positionbecause of the forces imparted to it by the movement of the head.

In the drawing: p

Figures 1 and 2 are partial sections of one form of the invention, onesection being taken parallel to theengine shaft, and the other at rightanglesv thereto.

Fig. 3 is a diagrammatic section illustrating the operation of this formof the .invention.

Fig. 4 is a partial section of another form of theinvention.

Fig. 5 is a partial section showing. a modification of theformillustrated in Fig. 4.

Figs. 6 and 7 are partialsections of still other forms of the invention,and

V Fig. 8 is a partial section of a modification of the form shown inFig. 7.

As shown in Figs. 1 and 2, the connectingrod 00 is part of an internalcombustion engine having one or more cylinders. In this structure thecrank pit g incloses the tight chambers b which constitute the pumpchambers where the explosive mixture for driving the-engine iscompressed by the corresponding piston which is connected by the rod :10to one of the crank-pins e of the crank-shaft e. The explosive mixtureis admitted to a chamber 7) throughits port 9. Now under thesecircumstances if the head of the connecting-rod m is suificientlylubricated, the oil after having accomplished its lubrication will workto the outside of this head m and will be thrown in all directions,owing to the moving crank-pin 6 if nothing Specification of LettersPatent.

Patented Feb. 18, 1919.

, Application filed August 7, 1918. Serial No. 248,725.

is provided to prevent such action. The oil will therefore be throwntoward port 9 and when the compressed explosive mixture is conveyedthrough the port 9 tothe cylinder it will carry with it a certainquantity of the oil.

To prevent this oil waste, a bushing m is placed in the revolving headof connectingrod 0: and is provided near each of its extremities with aninner annular groove 00 00 The groove m is shown as located, in a planeat right angles to the longitudinal axis of the bushing, and the groovew in a plane at an inclination thereto. In the latter case there is lessrisk of marking the crank-pin, owing to the wear at the same place. Eachof these grooves communicates through an orifice with a radially setpipe m which is fixed at an acute angle to the axis of the connectingrod w and terminates on the outside of the head 00 in the under part ofwhich said pipe 02 is secured.

The operation of this form of the invention may be explained byreference to Fig. 3, which is a section taken vertically on the axis ofthe crank pin 6 and passing through the groove w the dimensions ofgroove and oil being greatly exaggerated.

The oil is supplied to the head 09 of the connecting-rod m in anysuitable manner and after having lubricated the same, is collected inthe grooves 00 m Owing to the movement of the head :0 the oil in thegrooves is acted upon by two forces. The one, a centrifugal force causesthe oil in the grooves m and x during the revolution of shaft 2, toalways take a position which is opposite that of shaft 0 with regard tothe axis of the crank-pin 6 This is shown in Fig. 3 for the fourpositions I, II, III, IV of the crankpin.

The second force is inertia which acts materially in extreme positionsof the piston, that is in the positions I and III of the crank-pin inFig. 3. As the crank-pin approaches these two positions, Iand III, itsmovement is retarded both upwards and downwards, until it ceases to movein a vertical direction, and then starts again downward or upward with amarked throw which the oil owing to the inertia can not follow at once.From the action of these two forces and from the position in which thepipe {.86 is fixed, it will follow that the oil can escape from thegrooves m :2 only in the position III of the head, that is in a piedetermined direction and position so that the oil can not get near theorificeof port 9 Thus the quantity of oil carried along by the explosivemixture is so very small as to be negligible. At the time the oilescapes the gases in the crank case Will be nearly at rest,

which still further diminishes the risk of n iF g -l t e nm a i rew-e ae Pl ce in the; "facerends of the bushing a are. open toward said faces,and are inclined With re-v gard .to. said faces, in suchqa Way that theba a fl a erer t's e tc d tance from, the, axis of the bushlng than itsopening. Thesetgljpoyes jare likewise provided with escape pipes likethe, pipesg'si .As in Fig. ,5, the. devices, communieating. with ,theoil 1 collecting igrooves are pointed tongues, 00?, made, on theQoutsideofhead and .sojformed as. to cause the collectedpil tov be projected inapredetermined; direction at the yery moment of. the throw; ,of the crankoccurring during the. .re-. turn stroke ofthe, iston The bushing maybeproyided with theseprojecting tongues instead of making ,them on thehead itself.

e ferrling tofigb,it;,wi1l be seen that the ehgets its lubricating,Oilfnom a tcollect ng gutter, ,10 surroundin g the bearing 11 of-gtheshaft e by means of a chan nelhet Atj eaeh endof the bushing w tliecrank pin Q6 I has, an annular projection 6 on which the oil, is.collected after, having accomplished its. lubricating action, and

from which it fiows by the effect of centrifr 7 ugal gtoroe into an,inner. annular groove m? onithe bushing The grooye's whcommuni: cate,Withthe pipesm, The ollmay also beforced under, pressure to the ,vlcrank-ipin through, a .canal 1 (Fig. 6) made in the crank an,d,fed;fr,om.a groove 'the i side Of e ush s n he-bearins 12 Ivor theshaft 0. This delivery of the oil by pressure aduanta geous especiallyif the oil, is used to,lubric,ateand alsoto cool the bushings of thecrank and the bushing,m ead In ,anothenfor n ofthe invention asshown inF'g. 'the grooves (00? areplaced in the wi'at the corners here thecrank: pine? is roundedoli so' asto join the arms of vthe citank.'Eachwf these grooyes .02 is fitted with -its- O n- -pipe wt; Fig. 8shOWS medieee pefltt isfa m 9f he i t t e t Tt g eu cqmmunicateyiitheach other by}. nea is iota channel a??? made Within the outer surface.of thebusliing Wand by means of said ,pliiiiuiielgwith the, pipe as. Thewalls ,ofthe, crank caseg may be arra ged,- q asta-scllast to e ate h{-011 which escapes from the projections or pipes on the head of theconnecting-rod;

While I "-havedescribed my i invention as particularly applicable to aninternal combustion engine it illbe readily understood that it-is notlimited-to such use, and furthermore the escape pipes for the oil may beplaced at substantially 90 from the, po- .sitions shownand described soas to utilize the action of' the centrifugal force only instead of bothforces asdescribed without de parting vfrom the nature and of theinvention," 1 V I claim asmy invention:

.1. I An apparatus jofithe, jclass described, mp i ing asm sh t, cq' n qnglrq l, a vbushing in the head ofthe connecting rod surrounding a crankpin ,on the crankshaft, the said bushing beingaada pted'to collect thespent, lubricatingbil lsupplied Ibettyeen' -the samef and the prank pingand an. outlet e01}: nection so placed iniits, relationship tothebushing andpranklpin as. to discharge the collected lubricating 011, t epredetermi ed pointin the reyolution of the crank shaft;

2. An apparatu of, ,the pag described, comprising a k a t a xmeti i i ib h nsi t e ad o e m dies e surroundinga cranlnpin on the rank shaft andhaying .a grooye therein adapted to s e pe t l ri tin -o su pliedte hebushing and crank ,pin, ,and an outlet ot nection so placed andfixedlinLits relationship I to the, saidIbushing a agram: ping as todischarge.thelubricating 1 oil, collected in the said grooye at apredetermined, position and in a predeterminedidirection the hero:lutionipf thelcrankhshaftl n wreath 1 f h a s m es ihed, comprising acrank-shaft, a connecting-rod, t i hineinz he hea o t 1 fi t eI-rsurrounding the. crank pinbn,the cr ek ha t, d h s nee st wisep e t nstlubricating voil, ,andan outlet connection for I r in s h lltbti etie lll i (3 P termined directien and at,';a predetermined po ini h e e ut ono th r n -shu An p ara us the class ade er' b s comprising aerank-shaft,; a connectingerod, a bushing in the head of theconnecting-rod surrounding .',the crank pin, one-the ,Qcra nk shaft, andhaving a groovefor colleetingthe b c n da r p ste di g threl eh the head,of the connecting rod and Qmmus a ns w th. the ;'1'QOY6 n the u h ng sas tox i charge th o ed ub eetins il in a predetermined direction and ata predetermined point in the zrevolutionaof ,the crank shaftp p I 1 Anapparatu .91- h c a desc bed,

a bushing in the head vof the connecting-rod surroundlng a crank q inthe .cr shaft and. having a circumferential groove e Hwting thel briwtiio z a d a ripe compr sing a'cm khaft a cementing-1 rd,

fixed in the head of the connecting-rod in In testimony whereof I haveaflixed my a radial position and at an angle to thfI signature inpresence of two witnesses. axis of the rod and communicating Wit 7 thesaid groove in the bushing so as to dis- ALBERT ISLIKER' 5 charge thelubricating oil in a predetermined Witnesses:

direction and at a predetermined point in LOUIS W. MUNIoY, therevolution of the crank-shaft. JEAN SCHEIBENSTORY.

copies of this patent may be obtained for in cents each, by addressingthe commmioner of I'atents, wmnhlngton, D. 0."

